#ifndef __btree_h
#define __btree_h

typedef int DATA; 
typedef struct node
{
	DATA		data;
	struct	node	*left;
	struct	node	*right;
}NODE;

int btree_insert(NODE**,DATA);
void btree_first(const NODE*);
void btree_mid(const NODE*);
void btree_later(const NODE*);

int btree_free(NODE**);

#endif
